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Chemical Kinetics



Fuel flexibility, reducing pollutant emissions and increasing combustion efficiency, while simultaneously taking aspects of economic viability into account, is one of the greatest challenges in the development of novel combustion technologies. In recent years, modeling and simulation have proved to be excellent new tools for addressing these challenges. Experimental techniques in combination with numerical models are therefore applied rigorously by the Department to predict the reaction kinetics of combustion processes and the formation of pollutants for various gaseous and liquid fuels, and in this way to achieve progress in the optimization of combustion processes.

Activities are centered on processes of technological combustion systems controlled by chemical kinetics, such as pollutant formation, ignition behavior, heat release and flame velocities. Key focus in this regard is on synthetic and biogenic fuels, which have attracted strong interest in recent years in the context of the CO2 emissions problem.

Studying key elementary reactions in the kinetics in fuel pyrolysis and oxidation
Validation of reaction mechanisms for gaseous and liquid fuels at technically relevant pressures by determining ignition delay times, laminar flame speeds and the product distribution of stable species
Determining the combustion characteristics of gaseous and liquid fuels from biogenic sources and industrial processes
Determining the influence of fuel quality, impurities, additives, etc., on ignition and combustion properties of fuel mixtures
Pollutant formation and reduction mechanisms (NOx, CO, unburned hydrocarbons, PAHs) in stationary and non-stationary combustion processes
Model Fuel Design for Technically Relevant Fuels
Development and Reduction of Reaction Mechanisms: Construction of a hierarchical structured reaction model based on sub-mechanisms for combustion process modeling
Computing substance-specific physicochemical properties with the aid of quantum chemistry methods
Computing reaction rate coefficients of individual elementary reactions with the aid of quantum chemistry methods
Chemical Kinetics of Gasification Processes

Contact
Dr. rer. nat. Markus Köhler
Head of Working Group Chemical Analysis

German Aerospace Center

Institute of Combustion Technology

Stuttgart

Tel.: +49 711 6862 756

Fax: +49 711 6862-578

Research Fields
27/09/2019    3rd European Micro Gas Turbine Forum Conference
14/06/2019   Solaranlage SUN-to-LIQUID produziert erstmals solares Kerosin aus Sonnenlicht, Wasser und CO2
SUN-to-LIQUID produziert erstmals solares Kerosin
06/06/2019   Technologien für die Energiewende
06/06/2019   Stuttgarter Wissenschaftsfestival
24/01/2019   DLR/NASA-Forschungsflüge auf Kurs über Norddeutschland
25/03/2019   Alternative Treibstoffe in der Luftfahrt – vom Fuel Design zur praktischen Erprobung
Digitale Kompetenz für die Energiewende
2019
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2017
DLR-Standort Stuttgart
Key Elementary Reactions
Validation
Combustion Characteristics
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Pollutant Formation
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Development and Reduction
Physicochemical Properties
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Pollutant
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